Fix various, mostly minor errors in man pages like:

Fix various, mostly minor errors in man pages like:
- Abbreviated month name in .Dd
- position of HISTORY section
- alphabetical ordering within SEE ALSO section
- adding .Ed before .Sh DESCRIPTION
- remove trailing whitespaces
- Line break after a sentence stop
- Use BSD OS macros instead of hardcoded strings

No .Dd bumps as there was no actual content change made
in any of these pages.

Submitted by:	Gordon Bergling gbergling_gmail.com
Approved by:	bcr
Differential Revision:	https://reviews.freebsd.org/D24591